Filter Bank Multicarrier Communication System Based on Discrete Hartley Transform

1. A transmitter of a filter bank multicarrier communication system based on a discrete Hartley transform (DHT), said transmitter comprising: a serial-to-parallel conversion unit configured to perform serial-to-parallel conversion on M complex input data symbols, which are inputted thereto in series and each of which includes a real part and an imaginary part, and to output M real parts and M imaginary parts of the complex input data symbols in parallel, where M is a positive even integer; a first pre-processing unit coupled to the serial-to-parallel conversion unit for receiving the M real parts of the complex input data symbols, and configured to generate M pre-processed real-part components based on a pre-processing model and the M real parts of the complex input data symbols; a second pre-processing unit coupled to the serial-to-parallel conversion unit for receiving the M imaginary parts of the complex input data symbols, and configured to generate M pre-processed imaginary-part components based on the pre-processing model and the M imaginary parts of the complex input data symbols; a first data separator coupled to the first pre-processing unit for receiving the M pre-processed real-part components, and configured to separate the M pre-processed real-part components into M/2 even-numbered pre-processed real-part components and M/2 odd-numbered pre-processed real-part components; a second data separator coupled to the second pre-processing unit for receiving the M pre-processed imaginary-part components, and configured to separate the M pre-processed imaginary-part components into M/2 even-numbered pre-processed imaginary-part components and M/2 odd-numbered pre-processed imaginary-part components; a first synthesis filter bank coupled to the first data separator for receiving the M/2 even-numbered pre-processed real-part components and the M/2 odd-numbered pre-processed real-part components, and configured to generate a first-channel transmitted (Tx) baseband signal of M points by performing at least up-sampling, filtering, inverse discrete Hartley transform (IDHT), data combination, and parallel-to-serial conversion on pre-processed real-part components, the pre-processed real-part components consisting of the M/2 even-numbered pre-processed real-part components and the M/2 odd-numbered pre-processed real-part components; and a second synthesis filter bank coupled to the second data separator for receiving the M/2 even-numbered pre-processed imaginary-part components and the M/2 odd-numbered pre-processed imaginary-part components, and configured to generate a second-channel Tx baseband signal of M points by performing at least up-sampling, filtering, IDHT, data combination, and parallel-to-serial conversion on pre-processed imaginary-part components, the pre-processed imaginary-part components consisting of the M/2 even-numbered pre-processed imaginary-part components and the M/2 odd-numbered pre-processed imaginary-part components.

2. The transmitter of claim 1 , wherein the first synthesis filter bank includes: M/2 first up-sampling modules coupled to the first data separator for respectively receiving the M/2 even-numbered pre-processed real-part components, wherein each of the first up-sampling modules is configured to perform up-sampling on the respective one of the M/2 even-numbered pre-processed real-part components; M/2 second up-sampling modules coupled to the first data separator for respectively receiving the M/2 odd-numbered pre-processed real-part components, wherein each of the second up-sampling modules is configured to perform up-sampling on the respective one of the M/2 odd-numbered pre-processed real-part components; M/2 first prototype filters respectively coupled to the M/2 first up-sampling modules for respectively receiving the M/2 even-numbered pre-processed real-part components that have been up-sampled by the M/2 first up-sampling modules, wherein each of the first prototype filters is configured to perform filtering on the respective one of the M/2 even-numbered pre-processed real-part components that has been up-sampled; M/2 second prototype filters respectively coupled to the M/2 second up-sampling modules for respectively receiving the M/2 odd-numbered pre-processed real-part components that have been up-sampled by the M/2 second up-sampling modules, wherein each of the second prototype filters is configured to perform filtering on the respective one of the M/2 odd-numbered pre-processed real-part components that has been up-sampled; a first IDHT module coupled to the M/2 first prototype filters for receiving the M/2 even-numbered pre-processed real-part components that have been up-sampled by the first up-sampling modules and filtered by the first prototype filters, and configured to generate a first part of the first-channel Tx baseband signal by performing M/2-point IDHTs on two sets of the M/2 even-numbered pre-processed real-part components that have been up-sampled and filtered and that are received consecutively by the first IDHT module; a second IDHT module coupled to the M/2 second prototype filters for receiving the M/2 odd-numbered pre-processed real-part components that have been up-sampled by the second up-sampling modules and filtered by the second prototype filters, and configured to consecutively generate two serial second-IDHT results of M/2 points, where the M/2 points of each of the serial second-IDHT results are outputted in series, by performing M/2-point IDHTs on two sets of the M/2 odd-numbered pre-processed real-part components that have been up-sampled and filtered and that are received consecutively by the second IDHT module; a first serial-to-parallel conversion module coupled to the second IDHT module for receiving the two serial second-IDHT results of M/2 points, and configured to consecutively output two parallel second-IDHT results of M/2 points, where the M/2 points of each of the parallel second-IDHT results are outputted in parallel, by performing serial-to-parallel conversion on each of the two serial second-IDHT results of M/2 points; and a first data combination and parallel-to-serial conversion module coupled to the first serial-to-parallel conversion module for receiving the two parallel second-IDHT results of M/2 points, and configured to generate a second part of the first-channel Tx baseband signal by, for each of the two parallel second-IDHT results of M/2 points, performing data combination on the parallel second-IDHT result of M/2 points to obtain a data combination result, and performing parallel-to-serial conversion on the data combination result for the parallel second-IDHT result of M/2 points; and wherein the second synthesis filter bank includes: M/2 third up-sampling modules coupled to the second data separator for respectively receiving the M/2 even-numbered pre-processed imaginary-part components, wherein each of the third up-sampling modules is configured to perform up-sampling on the respective one of the M/2 even-numbered pre-processed imaginary-part components received thereby; M/2 fourth up-sampling modules coupled to the second data separator for respectively receiving the M/2 odd-numbered pre-processed imaginary-part components, wherein each of the fourth up-sampling modules is configured to perform up-sampling on the respective one of the M/2 odd-numbered pre-processed imaginary-part components received thereby; M/2 third prototype filters respectively coupled to the M/2 third up-sampling modules for respectively receiving the M/2 even-numbered pre-processed imaginary-part components that have been up-sampled by the M/2 third up-sampling modules, wherein each of the third prototype filters is configured to perform filtering on the respective one of the M/2 even-numbered pre-processed imaginary-part components received thereby; M/2 fourth prototype filters respectively coupled to the M/2 fourth up-sampling modules for respectively receiving the M/2 odd-numbered pre-processed imaginary-part components that have been up-sampled by the M/2 fourth up-sampling modules, wherein each of the fourth prototype filters is configured to perform filtering on the respective one of the M/2 odd-numbered pre-processed imaginary-part components received thereby; a third IDHT module coupled to the M/2 third prototype filters for receiving the M/2 even-numbered pre-processed imaginary-part components that have been up-sampled by the third up-sampling modules and filtered by the third prototype filters, and configured to generate a first part of the second-channel Tx baseband signal by performing M/2-point IDHTs on two sets of the M/2 even-numbered pre-processed imaginary-part components that have been up-sampled and filtered and that are received consecutively by the third IDHT module; a fourth IDHT module coupled to the M/2 fourth prototype filters for receiving the M/2 odd-numbered pre-processed imaginary-part components that have been up-sampled by the fourth up-sampling modules and filtered by the fourth prototype filters, and configured to consecutively output two serial fourth-IDHT results of M/2 points, where the M/2 points of each of the serial fourth-IDHT results are outputted in series, by performing M/2-point IDHTs on two sets of the M/2 odd-numbered pre-processed imaginary-part components that have been up-sampled and filtered and that are received consecutively by the fourth IDHT module; a second serial-to-parallel conversion module coupled to the fourth IDHT module for receiving the two serial fourth-IDHT results of M/2 points, and configured to perform serial-to-parallel conversion on each of the two serial fourth-IDHT results of M/2 points, and to consecutively output two parallel fourth-IDHT results of M/2 points, wherein for each of the two parallel fourth-IDHT results of M/2 points, the M/2 points of the parallel fourth-IDHT result are outputted in parallel; and a second data combination and parallel-to-serial conversion module coupled to the second serial-to-parallel conversion module for receiving the two parallel fourth-IDHT results of M/2 points, and configured to generate a second part of the second-channel Tx baseband signal by, for each of the two parallel fourth-IDHT results of M/2 points, performing data combination on the parallel fourth-IDHT result of M/2 points to obtain a data combination result, and performing parallel-to-serial conversion on the data combination result for the parallel fourth-IDHT result of M/2 points.

4. The transmitter of claim 1 , wherein the first synthesis filter bank includes: a first IDHT module coupled to the first data separator for receiving the M/2 even-numbered pre-processed real-part components, and configured to generate a first-IDHT result of M/2 points by performing an M/2-point IDHT on the M/2 even-numbered pre-processed real-part components; a second IDHT module coupled to the first data separator for receiving the M/2 odd-numbered pre-processed real-part components, and configured to generate a second-IDHT result of M/2 points by performing an M/2-point IDHT on the M/2 odd-numbered pre-processed real-part components; a first data combination module coupled to the second IDHT module for receiving the second-IDHT result of M/2 points, and configured to perform data combination on the second-IDHT result of M/2 points; M/2 different first polyphase filters each coupled to the first IDHT module for receiving a respective one of the M/2 points of the first-IDHT result, the first polyphase filters being configured to respectively generate M/2 first filtered outputs, wherein each of the first polyphase filters generates the respective one of the first filtered outputs by sequentially performing up-sampling and filtering on the respective one of the M/2 points of the first-IDHT result received thereby; M/2 different second polyphase filters each coupled to the first data combination module for receiving a respective one of the M/2 points of the second-IDHT result on which the data combination has been performed, the second polyphase filters being configured to respectively generate M/2 second filtered outputs, wherein each of the second polyphase filters generates the respective one of the second filtered outputs by sequentially performing up-sampling and filtering on the respective one of the M/2 points of the second-IDHT result received thereby; a first parallel-to-serial conversion module coupled to the M/2 first polyphase filters for receiving the M/2 first filtered outputs, and configured to generate a first part of the first-channel Tx baseband signal by sequentially performing up-sampling and parallel-to-serial conversion on the M/2 first filtered outputs; and a second parallel-to-serial conversion module coupled to the M/2 second polyphase filters for receiving the M/2 second filtered outputs, and configured to generate a second part of the first-channel Tx baseband signal by sequentially performing up-sampling and parallel-to-serial conversion on the M/2 second filtered outputs; and wherein the second synthesis filter bank includes: a third IDHT module coupled to the second data separator for receiving the M/2 even-numbered pre-processed imaginary-part components, and configured to generate a third-IDHT result of M/2 points by performing an M/2-point IDHT on the M/2 even-numbered pre-processed imaginary-part components; a fourth IDHT module coupled to the second data separator for receiving the M/2 odd-numbered pre-processed imaginary-part components, and configured to generate a fourth-IDHT result of M/2 points by performing an M/2-point IDHT on the M/2 odd-numbered pre-processed imaginary-part components; a second data combination module coupled to the fourth IDHT module for receiving the fourth-IDHT result of M/2 points, and configured to perform data combination on the fourth-IDHT result of M/2 points; M/2 different third polyphase filters each coupled to the third IDHT module for receiving a respective one of the M/2 points of the third-IDHT result, the third polyphase filters being configured to respectively generate M/2 third filtered outputs, wherein each of the third polyphase filters generates the respective one of the third filtered outputs by sequentially performing up-sampling and filtering on the respective one of the M/2 points of the third-IDHT result received thereby; M/2 different fourth polyphase filters each coupled to the second data combination module for receiving a respective one of the M/2 points of the fourth-IDHT result on which the data combination has been performed, the fourth polyphase filters being configured to respectively generate M/2 fourth filtered outputs, wherein each of the fourth polyphase filters generates the respective one of the fourth filtered outputs by sequentially performing up-sampling and filtering on the respective one of the M/2 points of the fourth-IDHT result received thereby; a third parallel-to-serial conversion module coupled to the M/2 third polyphase filters for receiving the M/2 third filtered outputs, and configured to generate a first part of the second-channel Tx baseband signal by sequentially performing up-sampling and parallel-to-serial conversion on the M/2 third filtered outputs; and a fourth parallel-to-serial conversion module coupled to the M/2 fourth polyphase filters for receiving the M/2 fourth filtered outputs, and configured to generate a second part of the second-channel Tx baseband signal by sequentially performing up-sampling and parallel-to-serial conversion on the M/2 fourth filtered outputs.